Impact of Preoperative Uric Acid on Postoperative Acute Kidney Injury in Female Patients Undergoing Non-cardiac Surgery

Preoperative serum uric acid has been increasingly recognized as a potential biomarker associated with acute kidney injury in various clinical settings. However, the sex-specific and hormonal influences on this association remain unclear, particularly in the context of non-cardiac surgery. Female patients, who experience significant physiological changes across the menopausal transition, may exhibit different renal susceptibilities to elevated serum uric acid levels.

In this retrospective cohort study, the investigators aimed to evaluate the association between preoperative serum uric acid levels and postoperative acute kidney injury in female patients undergoing non-cardiac surgery, with a particular focus on menopausal status. Women were stratified into premenopausal and postmenopausal groups based on age and clinical criteria. The investigators hypothesized that the threshold and pattern of serum uric acid-associated acute kidney injury risk may differ between these two populations due to differences in hormonal status and baseline renal reserve.